Creating a low-energy, eco-friendly home starts with taking the right approach to architectural design, from the shape and form of the building, to how sits in the landscape. We reveal the secrets to minimising heat loss and overheating by working with your design team from the start of the project. Our expert - an acclaimed designer of low-energy homes - gives an insider's guide to the key principles to ensure your home performs well, is comfortable year round, and has minimal running costs.